Motorcycle cover curved surface arc laser detection equipment

Abstract

The application discloses a kind of motorcycle cover curved surface radian laser detection equipment, belong to the technical field of motorcycle cover processing detection.The equipment includes driving belt, driven belt, plasma cleaning unit, refrigeration jet unit, heating jet unit and laser detection unit.The middle part detection station of driving belt is provided with concave mounting section, and driven belt is embedded in concave mounting section, and synchronous transmission is realized by side driving protrusion and baffle abutment.Plasma cleaning unit adopts multiple groups of independent adjustable nozzle module, and can self-adaptively match the surface profile of curved surface workpiece to complete cleaning.Refrigeration and heating jet unit cooperate on the surface of workpiece to form uniform mist layer, improve the high light reflection characteristics of metal, can realize continuous flow type detection, effectively isolate transmission vibration, solve the problem that existing scheme curved surface is not cleaned evenly, metal smooth surface is easy to cause detection signal distortion, and vibration isolation synchronization is difficult.

Description

Technical Field

[0001] This invention relates to the field of motorcycle body panel processing and inspection technology, specifically to a laser inspection device for the curvature of motorcycle body panel surfaces. Background Technology

[0002] In the stamping production of motorcycle body panels, the curvature of the surface is a crucial indicator of forming quality, directly impacting subsequent assembly accuracy and appearance fit. Before painting, the curvature of the metal workpieces needs to be precisely inspected. Currently, the industry commonly uses laser scanning equipment for online continuous inspection. Workpieces are transported sequentially through the inspection station via conveyor belts, enabling rapid quality inspection of batches of workpieces. To reduce the interference of conveyor belt vibration on the accuracy of laser inspection, some inspection equipment employs a dual-conveyor belt switching structure, allowing the workpiece to detach from the main conveyor belt in the inspection section, thereby mitigating the impact of vibration on the inspection results.

[0003] However, existing solutions still have several shortcomings. First, most existing equipment lacks a dedicated cleaning structure adapted to curved workpieces. Conventional fixed-height cleaning devices have poor cleaning uniformity for curved workpieces with undulating curvature. Residual stamping oil and metal debris on the surface can interfere with the laser reflection path, causing a large number of noise points in the detection data and increasing measurement deviation. Second, unpainted metal coverings have strong specular reflection characteristics. Direct laser irradiation can easily cause signal saturation and loss of effective reflected light, resulting in missing sampling points for the curved contour and a significant decrease in curvature detection accuracy. Existing detection equipment generally lacks a pre-processing structure for smooth metal surfaces. Third, the dual-conveyor belt vibration isolation scheme requires two sets of active drive systems to maintain strict synchronization, which is difficult to control synchronously. Speed ​​deviations can easily cause workpiece slippage and scratches on the unpainted metal surface.

[0004] Therefore, there is an urgent need for a continuous laser inspection device that combines adaptive cleaning of curved surfaces, improved reflection of smooth surfaces, and reliable vibration isolation to meet the accuracy and efficiency requirements of batch online quality inspection of motorcycle body panels. Summary of the Invention

[0005] The present invention aims to solve the problems of poor vibration isolation effect, uneven surface cleaning, and easy detection distortion caused by the reflection of metal smooth surface in the existing technology of motorcycle body panel curved surface inspection, and provides a laser inspection device for the curvature of motorcycle body panel curved surface.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A laser inspection device for the curvature of a motorcycle body panel includes a drive belt mounted on the upper side of a worktable via a set of drive rollers. The drive belt extends horizontally along the workpiece conveying direction. A recessed mounting section is provided at the middle inspection station, and at least one set of drive protrusions are provided on its upper surface. A driven conveyor belt is mounted within the recessed mounting section via an independent set of driven rollers. The belt body of the driven conveyor belt does not contact the belt body of the drive belt. The upper surface of the driven conveyor belt is flush with the bearing surface of the drive belt. A baffle corresponding to and engaging with the drive protrusions is provided on the surface of the driven conveyor belt. The drive protrusions and the baffles abut against each other along the conveying direction. A plasma cleaning unit includes a fixed bracket, multiple plasma nozzle modules, and a height adjustment component. The plasma nozzle modules are arranged sequentially along the width of the worktable. Each plasma nozzle module is connected to the lower part of the fixed bracket via the height adjustment component. The height of each plasma nozzle module can be independently adjusted vertically. The fixed bracket is mounted above the upstream section of the active drive belt. A cooling jet unit includes a cold air outlet and is mounted above the active drive belt downstream of the plasma cleaning unit. A heating jet unit includes a hot air outlet and is mounted above the active drive belt downstream of the cooling jet unit. A laser detection unit is mounted directly above the driven conveyor belt, with its detection surface facing downwards.

[0007] Furthermore, the workbench is provided with a mounting base for the independent driven roller group in the recessed mounting section, and vibration isolation bushings are sleeved at both ends of each roller shaft of the independent driven roller group, and the vibration isolation bushings are embedded in the mounting base.

[0008] Furthermore, the driving protrusion is disposed on the left and right sides of the active transmission belt body, and the baffle is correspondingly disposed on the left and right sides of the driven transmission belt body. The sidewall of the driving protrusion and the sidewall of the baffle abut against each other along the conveying direction.

[0009] Furthermore, the height of the driving protrusion is 8mm to 15mm, and the height of the baffle is adapted to the height of the driving protrusion.

[0010] Furthermore, the height adjustment component can be driven to rise and fall vertically along the fixed bracket as a whole. The height adjustment component has several through holes, and an elastic damping friction ring and a plug are provided in the through holes. The plug is interference-fitted with the elastic damping friction ring, and the plasma nozzle module is installed at the lower end of the plug.

[0011] Furthermore, each of the plasma nozzle modules is provided with at least one non-metallic support contact at its lower end, and the lower end face of the non-metallic support contact is lower than the end face of the plasma nozzle module.

[0012] Furthermore, the effective engagement length between the elastic damping friction ring and the insertion rod satisfies the following relationship: ; In the formula, This refers to the effective friction length between the elastic damping friction ring and the insertion rod. For reliability coefficient, The gravity of a single plasma nozzle module and the insert. The static friction coefficient is the coefficient between the elastic damping friction ring and the mating surface of the insertion rod. The diameter of the mating section of the insertion rod is [missing information]. This refers to the radial contact pressure between the elastic damping friction ring and the mating surface of the insertion rod.

[0013] Furthermore, both ends of the recessed mounting section are provided with smooth transition slopes, and the active drive belt gently dips and rises along the smooth transition slopes.

[0014] Furthermore, both the cold air outlet and the hot air outlet are strip-shaped slit structures extending along the width of the workbench.

[0015] Furthermore, the cooling jet unit and the heating jet unit also include a mounting bracket, on which both the cold air outlet and the hot air outlet are mounted.

[0016] Beneficial effects: 1. The vibration isolation structure with the active drive belt embedded in the driven conveyor belt is adopted, which can effectively isolate transmission vibration while realizing continuous flow operation. It does not require multi-system synchronous control, and the operation is stable and less likely to scratch the workpiece.

[0017] 2. It adopts a scalable plasma cleaning unit structure, which can automatically match curved workpieces with different curvatures, ensuring uniform cleaning of the entire surface and eliminating the interference of surface stains on the laser detection signal.

[0018] 3. By combining cooling and heating units to form a temperature difference fogging structure, the reflection of the metal mirror surface is converted into diffuse reflection, which effectively avoids laser detection signal saturation and greatly improves the accuracy of curved surface curvature detection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the plasma cleaning unit structure according to an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of part A in the image; Figure 4 This is a cross-sectional view of the overall structure of an embodiment of the present invention. Figure 5 for Figure 4 A magnified view of part B in the image; Figure 6 This is a schematic diagram of the workbench according to an embodiment of the present invention; Figure 7 This is a schematic diagram of a driven conveyor belt according to an embodiment of the present invention; Figure 8 for Figure 7 A magnified view of part C; Figure 9 This is a schematic diagram of the mounting bracket installation according to an embodiment of the present invention.

[0020] The components include: 1. Active drive belt; 11. Smooth transition inclined section; 12. Gear motor; 2. Worktable; 21. Recessed mounting section; 22. Mounting base; 3. Driven conveyor belt; 31. Independent driven roller group; 32. Vibration isolation bushing; 4. Drive protrusion; 5. Baffle; 6. Plasma cleaning unit; 61. Fixed bracket; 62. Plasma nozzle module; 63. Height adjustment component; 631. Elastic damping friction ring; 632. Insert rod; 64. Non-metallic support contact; 7. Cooling jet unit; 71. Cold air outlet; 72. Mounting bracket; 8. Heating jet unit; 81. Hot air outlet; 9. Laser detection unit. Detailed Implementation

[0021] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0022] See Figures 1 to 9According to the present invention, a laser inspection device for the curvature of a motorcycle body panel includes an active drive belt 1, which is mounted on the upper side of a worktable 2 via a drive roller assembly. The active drive belt 1 extends horizontally along the workpiece conveying direction. A recessed mounting section 21 is provided at the middle inspection station, and at least one set of drive protrusions 4 are provided on its upper surface. A driven conveyor belt 3 is mounted in the recessed mounting section 21 via an independent driven roller assembly 31. The belt body of the driven conveyor belt 3 is not in contact with the belt body of the active drive belt 1. The upper surface of the driven conveyor belt 3 is flush with the bearing surface of the active drive belt 1. A baffle 5 corresponding to and cooperating with the drive protrusions 4 is provided on the surface of the driven conveyor belt 3. The drive protrusions 4 and the baffle 5 abut against each other along the conveying direction. The plasma cleaning unit 6 includes a fixed bracket 61, multiple plasma nozzle modules 62, and a height adjustment component 63. The plasma nozzle modules 62 are arranged sequentially along the width of the worktable 2. Each plasma nozzle module 62 is connected to the lower part of the fixed bracket 61 via the height adjustment component 63. Each plasma nozzle module 62 can be independently adjusted in the vertical direction. The fixed bracket 61 is mounted above the upstream section of the active drive belt 1. The cooling jet unit 7 includes a cold air outlet 71 and is mounted above the active drive belt 1 downstream of the plasma cleaning unit 6. The heating jet unit 8 includes a hot air outlet 81 and is mounted above the active drive belt 1 downstream of the cooling jet unit 7. The laser detection unit 9 is mounted directly above the driven conveyor belt 3, with its detection surface facing downwards.

[0023] The active drive belt 1 provides continuous conveying power for the workpiece, driven by the geared motor 12, realizing online inspection in a continuous flow mode, adapting to the continuous production cycle of the stamping production line, and solving the problem of low efficiency of intermittent inspection.

[0024] Workbench 2 provides the installation support foundation for the entire conveying and testing structure, ensuring the positional accuracy and operational stability of each component.

[0025] The recessed mounting section 21 provides an embedded mounting space for the driven conveyor belt 3, keeping the conveying surface flat and without steps, thus preventing the workpiece from experiencing posture fluctuations when passing through the inspection station.

[0026] The drive protrusion 4 works in conjunction with the baffle 5 to horizontally transmit the power of the active drive belt to the driven conveyor belt, enabling them to run synchronously while avoiding vertical vibration transmission.

[0027] The driven conveyor belt 3 serves as the load-bearing structure of the detection section. It has no active power source and will not generate operational vibration, thus providing a stable load-bearing benchmark for laser detection.

[0028] The plasma cleaning unit 6 performs online cleaning of the workpiece surface, removing stamping oil and oxidation impurities, preventing stains from interfering with the laser reflection path, and improving the accuracy of detection data.

[0029] The fixed bracket 61 provides a unified installation benchmark for multiple nozzle modules. The fixed bracket 61 is equipped with a drive motor, which can drive the height adjustment component 63 to rise and fall, ensuring the synchronization of the overall lifting.

[0030] The plasma nozzle module 62 outputs plasma to complete the cleaning treatment of the workpiece surface. The multiple independently arranged structures can adapt to the cleaning needs of different areas of the curved surface.

[0031] The height adjustment component 63 enables adaptive height adjustment of each nozzle module, matching the curved contour of the workpiece and ensuring consistent cleaning distance in each area.

[0032] The cooling jet unit 7 cools the surface of the cleaned workpiece, providing a temperature difference basis for subsequent fog formation.

[0033] The cold air outlet 71 outputs cold air evenly, so that the surface of the workpiece is cooled evenly.

[0034] The heating jet unit 8 outputs hot steam, which condenses on the surface of the cold workpiece to form a uniform mist layer, converting the metal mirror reflection into diffuse reflection and solving the problem of laser detection signal saturation on highly reflective surfaces.

[0035] Hot air outlet 81 outputs hot steam evenly, ensuring that the thickness of the mist layer on the workpiece surface is consistent.

[0036] The laser detection unit 9 performs laser scanning on the curved surface of the workpiece, outputs the surface curvature detection data, and completes the forming quality inspection of the workpiece.

[0037] According to the present invention, a laser inspection device for the curvature of a motorcycle body panel is provided. The worktable 2 is provided with a mounting base 22 for an independent driven roller group 31 in the recessed mounting section 21. Each end of the roller shaft of the independent driven roller group 31 is fitted with a vibration isolation bushing 32, which is embedded in the mounting base 22.

[0038] Mounting base 22 provides a stable mounting foundation for the driven roller assembly, ensuring the smoothness of the driven conveyor belt 3 during operation. Vibration isolation bushing 32 can further reduce the transmission of external vibrations to the driven conveyor belt 3, improve the vibration isolation effect of the detection section, and prevent base vibration from interfering with detection accuracy.

[0039] According to the present invention, a laser detection device for the curvature of a motorcycle body panel is provided, wherein a driving protrusion 4 is provided on the left and right sides of the active transmission belt 1, and a baffle 5 is provided on the left and right sides of the driven transmission belt 3, and the side wall of the driving protrusion 4 and the side wall of the baffle 5 abut against each other along the conveying direction.

[0040] The drive protrusion 4 and the baffle 5 are arranged on both sides of the belt body, which can avoid the workpiece bearing area in the middle, prevent the protrusion structure from interfering and scratching with the workpiece, protect the appearance quality of the unpainted metal surface, and at the same time, the side abutment method can stably transmit the horizontal traction force.

[0041] According to the present invention, a laser inspection device for the curvature of a motorcycle body panel is provided, wherein the height of the driving protrusion 4 is 8mm to 15mm, and the height of the baffle 5 is adapted to the height of the driving protrusion 4, so that the side wall of the driving protrusion 4 and the side wall of the baffle 5 form an abutting fit along the conveying direction.

[0042] When the height of the drive protrusion 4 is less than 8mm, the effective matching height between the two is insufficient, which can easily lead to slippage and misalignment during conveying, resulting in synchronous transmission failure. When the height of the drive protrusion 4 is greater than 15mm, the protrusion structure occupies too much space, which can easily interfere with the surrounding frame structure and increase the processing cost of the belt. The preferred height of the drive protrusion 4 is 10mm, which balances transmission reliability and structural compactness, and ensures no slippage or interference during operation.

[0043] According to the present invention, a laser detection device for the curvature of a motorcycle body panel is provided. The height adjustment component 63 can be driven to rise and fall vertically along the fixed bracket 61. The height adjustment component 63 has several through holes. An elastic damping friction ring 631 and a plug rod 632 are provided in the through holes. The plug rod 632 is interference-fitted with the elastic damping friction ring 631. A plasma nozzle module 62 is installed at the lower end of the plug rod 632.

[0044] When the baffle 5 moves the height adjustment component 63 downwards, each insert rod 632 can extend and retract autonomously according to the curved surface contour of the workpiece, automatically adapting to the height difference of the curved surface to form a contoured arrangement that matches the workpiece surface. The damping force provided by the elastic damping friction ring can keep the position of the insert rod 632 fixed after the whole assembly is lifted, so that each nozzle module maintains the contoured posture to complete the cleaning operation. No separate drive component is required, the structure is simple and highly adaptable, and it can be compatible with workpieces of different curvature specifications.

[0045] According to the present invention, a laser inspection device for the curvature of a motorcycle body panel is provided, wherein each plasma nozzle module 62 is provided with at least one non-metallic support contact 64 at its lower end, and the lower end surface of the non-metallic support contact 64 is lower than the end surface of the plasma nozzle module 62.

[0046] The non-metallic support contact 64 contacts the workpiece surface first during the overall downward contouring process, preventing the nozzle end face from directly colliding with the workpiece and protecting the nozzle structure from damage. Simultaneously, it precisely limits the cleaning distance between the nozzle and the workpiece surface, ensuring consistent cleaning intensity across all areas. The non-metallic material will not scratch the surface of unpainted metal workpieces, guaranteeing the workpiece's appearance quality.

[0047] According to the laser detection device for the curvature of a motorcycle body panel provided by the present invention, the effective mating length between the elastic damping friction ring 631 and the insertion rod 632 satisfies the following relationship: ; Where L is the effective friction length between the elastic damping friction ring 631 and the insertion rod 632, k is the reliability coefficient, G is the gravity of a single plasma nozzle module 62 and the insertion rod 632, μ is the static friction coefficient of the mating surface between the elastic damping friction ring 631 and the insertion rod 632, d is the diameter of the mating section of the insertion rod 632, and p is the radial contact pressure of the mating surface between the elastic damping friction ring 631 and the insertion rod 632.

[0048] This formula is derived from the axial static friction balance theory of cylindrical interference fit. When the elastic damping friction ring 631 and the insert rod 632 are interference fitted, radial contact pressure acts on the cylindrical mating surface, generating a normal force. The product of the normal force and the static friction coefficient is the maximum axial static friction force that the contact surface can provide. To ensure that the nozzle module will not slip due to its own weight after contour positioning, while also considering the smoothness of downward contouring, a reliability coefficient is introduced to correct the critical equilibrium state. When the maximum static friction force equals the reliability coefficient multiplied by the total weight of the component, the design critical state is reached, and the above effective friction length calculation formula is derived through deformation. This formula can accurately guide the size design of the damping structure, making the friction self-locking characteristics adapt to the contour positioning requirements of this scenario, and avoiding the problems of positioning failure or excessive contouring resistance caused by empirical design.

[0049] The reliability coefficient k is used to correct for additional loads such as impact and vibration in actual working conditions, ensuring the reliability of positioning and self-locking. Its value ranges from 1.2 to 1.8. When the reliability coefficient is less than 1.2, the safety margin is insufficient, and vibration of the conveyor line or airflow disturbance can easily cause slippage of the insert rod 632 and deviation of the nozzle posture. When the reliability coefficient is greater than 1.8, the frictional resistance is too high, and the insert rod 632 will not extend or retract smoothly during downward contouring, easily damaging the workpiece surface. A reliability coefficient of 1.5 is preferred, balancing positioning stability and smooth contouring.

[0050] The gravity G of a single plasma nozzle module 62 and insert rod 632 is the basic load that needs to be balanced for frictional self-locking, and determines the reference value of the minimum static friction force required.

[0051] The static friction coefficient μ reflects the friction characteristics of the mating surfaces and is the core parameter for calculating the maximum static friction force. It needs to be selected based on the actual materials of the friction ring and the insert rod 632.

[0052] The diameter d of the mating section of the insert 632 directly affects the size of the mating contact area. The larger the diameter, the greater the static friction force that can be provided under the same contact pressure.

[0053] The radial contact pressure p is determined by the interference fit. The greater the pressure, the greater the normal force on the contact surface, and the stronger the static friction force that can be provided.

[0054] Design Example: This formula is designed for the plasma cleaning unit 6 of a conventional motorcycle body panel inspection equipment. Based on the commonly used small plasma nozzle module 62, and combined with the reasonable working pressure of the elastic damping friction ring 631, the radial contact pressure p is set to 0.08MPa. The effective friction length L under suitable working conditions is calculated in the forward direction. The specific parameter values ​​are as follows: the total weight G of a single plasma nozzle module 62 and the insert rod 632 is 8N, the static friction coefficient μ is 0.3, the diameter d of the mating section of the insert rod 632 is 8mm, the reliability coefficient k is 1.5, and the radial contact pressure p is 0.08MPa.

[0055] Substituting into the formula, the effective friction length L is calculated in the positive direction: ; The calculated effective friction length L is approximately 20mm, which conforms to the standard assembly and usage specifications of damping friction rings. Combined with a reasonable radial contact pressure of 0.08MPa, it provides sufficient axial static friction to achieve stable self-locking, preventing nozzle module attitude deviation caused by equipment conveying vibration. It also ensures smooth extension and retraction of the insertion rod 632 during contouring descent operations, preventing jamming or workpiece damage due to excessive damping, thus adapting to the flexible contouring cleaning conditions of this equipment.

[0056] According to the present invention, a laser detection device for the curvature of a motorcycle body panel is provided, wherein both the front and rear ends of the recessed mounting section 21 are provided with smooth transition inclined sections 11, and the active transmission belt 1 gently descends and rises along the transition inclined sections.

[0057] The smooth transition inclined section 11 allows the height of the active drive belt 1 to change slowly, avoiding sharp bends and damage to the belt body, extending the service life of the conveyor belt, and at the same time, it allows the workpiece to enter and exit the inspection station smoothly, avoiding sudden changes in posture that affect the stability of the inspection.

[0058] According to the present invention, a laser inspection device for the curvature of a motorcycle body panel is provided, wherein both the cold air outlet 71 and the hot air outlet 81 are strip-shaped slit structures extending along the width direction of the worktable 2.

[0059] The strip-shaped slit structure allows airflow to be output evenly along the width of the workpiece, ensuring consistent cooling and fogging effects across the entire width of the workpiece and avoiding uneven fog thickness in certain areas from affecting detection accuracy.

[0060] According to the present invention, a laser detection device for the curvature of a motorcycle body panel includes a cooling jet unit 7 and a heating jet unit 8, which further include a mounting bracket 72. The cold air outlet 71 and the hot air outlet 81 are both mounted on the mounting bracket 72.

[0061] Mounting bracket 72 provides a unified mounting and fixing reference for the air outlet, which can ensure the installation angle and height accuracy of the air outlet, and at the same time facilitate the overall adjustment of the position of the jet unit to adapt to the inspection needs of workpieces of different specifications.

[0062] The implementation process and principle of this invention are as follows: The workpiece is conveyed forward sequentially by the active transmission belt 1, first passing through the plasma cleaning unit 6. The motor-driven height adjustment component 63 of the fixed bracket 61 descends as a whole. After the non-metallic support contact 64 at the lower end of each insertion rod 632 contacts the curved surface of the workpiece, it extends and retracts autonomously with the height of the curved surface. The elastic damping friction ring 631 provides damping to maintain the posture, so that each plasma nozzle module 62 forms a contoured arrangement corresponding to the curved surface of the workpiece. Subsequently, the fixed bracket 61 is raised to a preset height as a whole, and the plasma nozzle module 62 synchronously outputs plasma to complete the uniform cleaning of the entire surface of the workpiece, removing surface oil and debris, and eliminating the interference of stains on the laser signal.

[0063] After cleaning, the workpiece continues forward and is evenly cooled by the cold air when it passes through the cooling jet unit 7. Then it enters the heating jet unit 8 area, where the hot steam condenses on the surface of the cold workpiece to form a uniform mist layer, which converts the metal mirror reflection into a diffuse reflection state, avoiding the signal saturation problem caused by direct laser irradiation and ensuring the integrity of contour sampling.

[0064] The workpiece then enters the inspection station. The drive protrusion 4 on the side of the active drive belt 1 abuts against the baffle 5 on the side of the driven conveyor belt 3, causing the driven conveyor belt 3 to run synchronously with the active drive belt 1. The workpiece is transferred to the driven conveyor belt 3, where the main load is borne by the driven conveyor belt 3. The active drive belt 1 only provides horizontal traction, and vertical vibrations cannot be transmitted to the workpiece. At the same time, the vibration isolation bushings 32 at both ends of the driven roller group further weaken external vibrations, providing a stable bearing environment for laser inspection. The laser inspection unit 9 scans and inspects the curved surface of the workpiece, outputting accurate surface curvature data.

[0065] After the workpiece completes the inspection, it returns to the drive belt 1 via the driven conveyor belt 3 and continues to be transported downstream, completing the entire inspection process.

[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A laser inspection device for the curvature of a motorcycle body panel, characterized in that, include: An active drive belt is mounted on the upper side of the workbench via a drive roller assembly. The active drive belt extends horizontally along the workpiece conveying direction. A recessed mounting section is provided at the middle detection station, and at least one set of drive protrusions is provided on the upper surface. The driven conveyor belt is installed in the recessed mounting section by an independent driven roller group. The belt body of the driven conveyor belt is not in contact with the belt body of the driving belt. The upper surface of the driven conveyor belt is flush with the bearing surface of the driving belt. The surface of the driven conveyor belt is provided with a baffle that corresponds to and cooperates with the driving protrusion. The driving protrusion and the baffle abut against each other along the conveying direction. The plasma cleaning unit includes a fixed bracket, multiple plasma nozzle modules, and a height adjustment component. The plasma nozzle modules are arranged sequentially along the width of the worktable. Each plasma nozzle module is connected to the lower part of the fixed bracket through the height adjustment component. The height of each plasma nozzle module can be independently adjusted in the vertical direction. The fixed bracket is mounted above the upstream section of the active drive belt. A cooling jet unit, including a cold air outlet, is mounted above the active drive belt downstream of the plasma cleaning unit; A heating jet unit, including a hot air outlet, is mounted above the active drive belt downstream of the cooling jet unit; A laser detection unit is mounted directly above the driven conveyor belt, with the detection surface of the laser detection unit facing downwards.

2. The laser inspection equipment for the curvature of motorcycle body panels as described in claim 1, characterized in that, The workbench is provided with a mounting base for the independent driven roller group in the recessed mounting section. Each end of the roller shaft of the independent driven roller group is fitted with a vibration isolation bushing, which is embedded in the mounting base.

3. The laser inspection equipment for the curvature of motorcycle body panels as described in claim 1, characterized in that, The driving protrusion is located on the left and right sides of the active transmission belt body, and the baffle is located on the left and right sides of the driven transmission belt body respectively. The sidewall of the driving protrusion and the sidewall of the baffle are in contact and cooperate with each other along the conveying direction.

4. A laser inspection device for the curvature of a motorcycle body panel as described in claim 1 or 3, characterized in that, The height of the driving protrusion is 8mm to 15mm, and the height of the baffle is adapted to the height of the driving protrusion.

5. The laser inspection equipment for the curvature of a motorcycle body panel as described in claim 1, characterized in that, The height adjustment component can be driven to rise and fall vertically along the fixed bracket. The height adjustment component has several through holes, and an elastic damping friction ring and a rod are provided in the through holes. The rod is interference-fitted with the elastic damping friction ring, and the plasma nozzle module is installed at the lower end of the rod.

6. The laser inspection equipment for the curvature of a motorcycle body panel as described in claim 5, characterized in that, Each of the plasma nozzle modules has at least one non-metallic support contact at its lower end, and the lower end face of the non-metallic support contact is lower than the end face of the plasma nozzle module.

7. The laser inspection equipment for the curvature of motorcycle body panels as described in claim 5, characterized in that, The effective engagement length between the elastic damping friction ring and the insertion rod satisfies the following relationship: ； In the formula, This refers to the effective friction length between the elastic damping friction ring and the insertion rod. For reliability coefficient, The gravity of a single plasma nozzle module and the insert. The static friction coefficient is the coefficient between the elastic damping friction ring and the mating surface of the insertion rod. The diameter of the mating section of the insertion rod is [missing information]. This refers to the radial contact pressure between the elastic damping friction ring and the mating surface of the insertion rod.

8. The laser inspection equipment for the curvature of a motorcycle body panel as described in claim 1, characterized in that, Both ends of the recessed mounting section are provided with smooth transition slopes, and the active drive belt gently descends and rises along the smooth transition slopes.

9. The laser inspection equipment for the curvature of a motorcycle body panel as described in claim 1, characterized in that, Both the cold air outlet and the hot air outlet are strip-shaped slit structures extending along the width of the workbench.

10. The laser inspection equipment for the curvature of a motorcycle body panel as described in claim 1, characterized in that, The cooling jet unit and the heating jet unit also include a mounting bracket, and the cold air outlet and the hot air outlet are both mounted on the mounting bracket.

Images